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Orthopaedics · Hand injuries
Sample itemWhich tendon injury causes inability to actively extend the distal interphalangeal joint after a forced finger flexion?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Mallet finger
Mallet finger results from disruption of the terminal extensor tendon, leaving the distal interphalangeal joint unable to extend actively.
Option by option
A. Jersey finger
Jersey finger affects flexor tendon function.
B. Trigger finger
Trigger finger causes catching during tendon glide.
C. Mallet finger (correct)
Correct: terminal extensor disruption produces mallet finger.
D. De Quervain tenosynovitis
De Quervain disease affects thumb-side wrist tendons.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.